#!/usr/bin/env bash

working_dir=$(pwd) 
ep_num=$( echo ${working_dir} | awk -F '_' '{print $2}' ) 

echo "Settting ep_num=\"${ep_num}\", and working_dir=\"${working_dir}\"" >&2

image_count=0

for found_image in $( find "${working_dir}" -maxdepth 1 -mindepth 1 -type f -exec file --mime-type {} \; | grep image | awk -F ': ' '{print $1}' )
do
  this_image="${working_dir}/hpr${ep_num}_image_${image_count}"
  cp -v "${found_image}" "${this_image}" >&2
  this_ext="$( file --mime-type ${this_image} | awk -F '/' '{print $NF}' )"
  mv -v "${this_image}" "${this_image}.${this_ext}" >&2
  this_width="$( mediainfo --Full --Output=XML "${this_image}.${this_ext}" | xmlstarlet sel --text --template --match '/_:MediaInfo/_:media/_:track[@type="Image"][1]' --value-of '_:Width' --nl - )"
  if [ "${this_width}" -gt "400" ]
  then
    echo "Generating thumbnail for embedded image \"${this_image}.${this_ext}\"." >&2
    magick "${this_image}.${this_ext}" -resize 400x "${this_image}_tn.${this_ext}"
    
    echo "<p><a href=\"$( basename "${this_image}.${this_ext}" )\"><img src=\"$( basename "${this_image}_tn.${this_ext}" )\" /></a></p>"
    
  fi
  ((image_count=image_count+1))
done